282 lines
7.3 KiB
C
282 lines
7.3 KiB
C
/*-
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* Copyright (c) 2000 Takanori Watanabe
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_acpi.h"
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <sys/ioccom.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/conf.h>
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#include <sys/power.h>
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#include <contrib/dev/acpica/acpi.h>
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#include <dev/acpica/acpivar.h>
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#include <dev/acpica/acpiio.h>
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#include <isa/isavar.h>
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#include <isa/pnpvar.h>
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/* Hooks for the ACPI CA debugging infrastructure */
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#define _COMPONENT ACPI_AC_ADAPTER
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ACPI_MODULE_NAME("AC_ADAPTER")
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/* Number of times to retry initialization before giving up. */
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#define ACPI_ACAD_RETRY_MAX 6
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#define ACPI_POWERSOURCE_STAT_CHANGE 0x80
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struct acpi_acad_softc {
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int status;
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};
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static void acpi_acad_get_status(void *);
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static void acpi_acad_notify_handler(ACPI_HANDLE, UINT32, void *);
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static int acpi_acad_probe(device_t);
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static int acpi_acad_attach(device_t);
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static int acpi_acad_ioctl(u_long, caddr_t, void *);
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static int acpi_acad_sysctl(SYSCTL_HANDLER_ARGS);
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static void acpi_acad_init_acline(void *arg);
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static void acpi_acad_ac_only(void *arg);
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static device_method_t acpi_acad_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, acpi_acad_probe),
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DEVMETHOD(device_attach, acpi_acad_attach),
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{0, 0}
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};
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static driver_t acpi_acad_driver = {
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"acpi_acad",
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acpi_acad_methods,
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sizeof(struct acpi_acad_softc),
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};
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static devclass_t acpi_acad_devclass;
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DRIVER_MODULE(acpi_acad, acpi, acpi_acad_driver, acpi_acad_devclass, 0, 0);
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MODULE_DEPEND(acpi_acad, acpi, 1, 1, 1);
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ACPI_SERIAL_DECL(acad, "ACPI AC adapter");
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SYSINIT(acad, SI_SUB_KTHREAD_IDLE, SI_ORDER_FIRST, acpi_acad_ac_only, NULL);
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static void
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acpi_acad_get_status(void *context)
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{
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struct acpi_acad_softc *sc;
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device_t dev;
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ACPI_HANDLE h;
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int newstatus;
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dev = context;
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sc = device_get_softc(dev);
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h = acpi_get_handle(dev);
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newstatus = -1;
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acpi_GetInteger(h, "_PSR", &newstatus);
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/* If status is valid and has changed, notify the system. */
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ACPI_SERIAL_BEGIN(acad);
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if (newstatus != -1 && sc->status != newstatus) {
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sc->status = newstatus;
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power_profile_set_state(newstatus ? POWER_PROFILE_PERFORMANCE :
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POWER_PROFILE_ECONOMY);
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ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
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"%s Line\n", newstatus ? "On" : "Off");
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acpi_UserNotify("ACAD", h, newstatus);
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}
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ACPI_SERIAL_END(acad);
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}
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static void
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acpi_acad_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
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{
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device_t dev;
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dev = (device_t)context;
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switch (notify) {
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case ACPI_NOTIFY_BUS_CHECK:
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case ACPI_NOTIFY_DEVICE_CHECK:
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case ACPI_POWERSOURCE_STAT_CHANGE:
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/* Temporarily. It is better to notify policy manager */
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AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_acad_get_status, context);
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break;
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default:
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device_printf(dev, "unknown notify %#x\n", notify);
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break;
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}
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}
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static int
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acpi_acad_probe(device_t dev)
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{
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static char *acad_ids[] = { "ACPI0003", NULL };
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if (acpi_disabled("acad") ||
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ACPI_ID_PROBE(device_get_parent(dev), dev, acad_ids) == NULL)
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return (ENXIO);
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device_set_desc(dev, "AC Adapter");
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return (0);
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}
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static int
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acpi_acad_attach(device_t dev)
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{
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struct acpi_acad_softc *sc;
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struct acpi_softc *acpi_sc;
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ACPI_HANDLE handle;
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int error;
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sc = device_get_softc(dev);
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handle = acpi_get_handle(dev);
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error = acpi_register_ioctl(ACPIIO_ACAD_GET_STATUS, acpi_acad_ioctl, dev);
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if (error != 0)
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return (error);
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if (device_get_unit(dev) == 0) {
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acpi_sc = acpi_device_get_parent_softc(dev);
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SYSCTL_ADD_PROC(&acpi_sc->acpi_sysctl_ctx,
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SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree),
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OID_AUTO, "acline", CTLTYPE_INT | CTLFLAG_RD,
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&sc->status, 0, acpi_acad_sysctl, "I", "");
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}
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/* Get initial status after whole system is up. */
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sc->status = -1;
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/*
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* Install both system and device notify handlers since the Casio
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* FIVA needs them.
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*/
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AcpiInstallNotifyHandler(handle, ACPI_ALL_NOTIFY,
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acpi_acad_notify_handler, dev);
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AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_acad_init_acline, dev);
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return (0);
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}
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static int
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acpi_acad_ioctl(u_long cmd, caddr_t addr, void *arg)
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{
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struct acpi_acad_softc *sc;
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device_t dev;
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dev = (device_t)arg;
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sc = device_get_softc(dev);
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/*
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* No security check required: information retrieval only. If
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* new functions are added here, a check might be required.
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*/
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switch (cmd) {
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case ACPIIO_ACAD_GET_STATUS:
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acpi_acad_get_status(dev);
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*(int *)addr = sc->status;
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break;
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default:
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break;
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}
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return (0);
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}
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static int
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acpi_acad_sysctl(SYSCTL_HANDLER_ARGS)
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{
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int val, error;
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if (acpi_acad_get_acline(&val) != 0)
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return (ENXIO);
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val = *(u_int *)oidp->oid_arg1;
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error = sysctl_handle_int(oidp, &val, 0, req);
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return (error);
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}
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static void
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acpi_acad_init_acline(void *arg)
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{
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struct acpi_acad_softc *sc;
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device_t dev;
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int retry;
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dev = (device_t)arg;
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sc = device_get_softc(dev);
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ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
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"acline initialization start\n");
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for (retry = 0; retry < ACPI_ACAD_RETRY_MAX; retry++) {
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acpi_acad_get_status(dev);
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if (sc->status != -1)
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break;
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AcpiOsSleep(10000);
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}
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ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
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"acline initialization done, tried %d times\n", retry + 1);
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}
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/*
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* If no AC line devices detected after boot, create an "online" event
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* so that userland code can adjust power settings accordingly. The default
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* power profile is "performance" so we don't need to repeat that here.
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*/
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static void
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acpi_acad_ac_only(void __unused *arg)
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{
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if (devclass_get_count(acpi_acad_devclass) == 0)
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acpi_UserNotify("ACAD", ACPI_ROOT_OBJECT, 1);
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}
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/*
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* Public interfaces.
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*/
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int
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acpi_acad_get_acline(int *status)
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{
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struct acpi_acad_softc *sc;
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device_t dev;
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dev = devclass_get_device(acpi_acad_devclass, 0);
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if (dev == NULL)
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return (ENXIO);
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sc = device_get_softc(dev);
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acpi_acad_get_status(dev);
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*status = sc->status;
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return (0);
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}
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